Shearlet域尺度角度自适应深反射地震数据随机噪声压制方法

王通, 刘建勋, 王兴宇, 李广才, 田密

Suppression of random noise in deep seismic reflection data using adaptive threshold-based Shearlet transform

WANG Tong, Liu Jian-Xun, WANG Xing-Yu, LI Guang-Cai, TIAN Mi

图4 单炮记录随机噪声去除效果 a—传统Shearlet域阈值方法;b—Shearlet域尺度角度自适应阈值方法;c—传统Shearlet域阈值方法去除噪声;d—Shearlet域尺度角度自适应阈值方法去除的噪声;e—传统Shearlet域阈值方法第三尺度结果;f—传统Shearlet域阈值方法第四尺度结果;g—Shearlet域尺度角度自适应阈值方法第三尺度结果;h—Shearlet域尺度角度自适应阈值方法第四尺度结果

Fig.4 Shearlet domain threshold method for the removal of random noise a—traditional Shearlet domain threshold method;b—Shearlet domain scale angle adaptive threshold method;c—random noise by traditional Shearlet domain threshold method;d—random noise by Shearlet domain scale angle adaptive threshold method;e—the 3rd scale result of traditional Shearlet domain threshold method;f—the 4th scale result of traditional Shearlet domain threshold method;g—the 3rd scale result of Shearlet domain scale angle adaptive threshold method;h—the 4th scale result of Shearlet domain scale angle adaptive threshold method